Add nav links to section home pages
Add nav links to section home pages

STIXProject/stixproject.github.io,jburns12/stixproject.github.io,jburns12/stixproject.github.io,johnwunder/johnwunder.github.io,jburns12/stixproject.github.io,STIXProject/stixproject.github.io,STIXProject/stixproject.github.io,johnwunder/johnwunder.github.io,jburns12/stixproject.github.io,STIXProject/stixproject.github.io,johnwunder/johnwunder.github.io,johnwunder/johnwunder.github.io